Home / 89,720.25-123,815.55-49,433.76

Finding the Fourth Proportional to 89,720.25, 123,815.55 and 49,433.76

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Solution

The fourth proportional to 89,720.25, 123,815.55 and 49,433.76 is: 68,219.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,720.25 : 123,815.55 = 49,433.76 : x
  2. Step 2: Convert to fraction form
    89,720.25/123,815.55 = 49,433.76/x
  3. Step 3: Cross multiply
    89,720.25x = 123,815.55 × 49,433.76
  4. Step 4: Simplify right side
    89,720.25x = 6,120,668,182.97
  5. Step 5: Solve for x
    x = 6,120,668,182.97/89,720.25
  6. Step 6: Final answer
    x = 68,219.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.